CA2084375A1 - Screening method and apparatus - Google Patents
Screening method and apparatusInfo
- Publication number
- CA2084375A1 CA2084375A1 CA002084375A CA2084375A CA2084375A1 CA 2084375 A1 CA2084375 A1 CA 2084375A1 CA 002084375 A CA002084375 A CA 002084375A CA 2084375 A CA2084375 A CA 2084375A CA 2084375 A1 CA2084375 A1 CA 2084375A1
- Authority
- CA
- Canada
- Prior art keywords
- chips
- screen
- disc screen
- disc
- overthick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/02—Pretreatment of the raw materials by chemical or physical means
- D21B1/023—Cleaning wood chips or other raw materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
- B07B13/14—Details or accessories
- B07B13/18—Control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
- B07B9/00—Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Combined Means For Separation Of Solids (AREA)
- Debarking, Splitting, And Disintegration Of Timber (AREA)
Abstract
The present invention concerns a screening method and apparatus for sorting wood chips into three categories, namely, accept chips, overthick and/or overlong chips requiring further processing and reject fines. The chips are fed onto a disc screen. A major portion of fines and a portion of accepts fall by gravity through clearances between the discs (1) of the disc screen and a portion of the chips travels over the disc screen. Screening of chips on the disc screen is cut short before all accept chips have fallen through the disc screen. Chips travelling over the discharge end of the disc screen are routed onto a roller screen (10), whereby the remaining portion of accepts can fall by gravity through the roller screen while overthick and/or overlong chunky chips are conveyed over the discharge end of the roller screen.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI915803A FI90019C (en) | 1991-12-10 | 1991-12-10 | SAOLLNINGSFOERFARANDE OCH -ANORDNING |
FI915,803 | 1991-12-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2084375A1 true CA2084375A1 (en) | 1993-06-11 |
CA2084375C CA2084375C (en) | 2002-07-23 |
Family
ID=8533642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002084375A Expired - Fee Related CA2084375C (en) | 1991-12-10 | 1992-12-02 | Screening method and apparatus |
Country Status (3)
Country | Link |
---|---|
US (1) | US5232097A (en) |
CA (1) | CA2084375C (en) |
FI (1) | FI90019C (en) |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5799801A (en) * | 1994-06-22 | 1998-09-01 | Bulk Handling System, Inc. | Method and apparatus for separating paper from cardboard |
US5901856A (en) * | 1996-03-29 | 1999-05-11 | Brantley, Jr.; Stanley A. | Paper and cardboard separator with inverting rotor |
DE59608838D1 (en) * | 1996-04-11 | 2002-04-11 | Dieffenbacher Schenck Panel | Process for the continuous production of a nonwoven for the production of wood-based panels or similar boards |
US5960964A (en) * | 1996-05-24 | 1999-10-05 | Bulk Handling, Inc. | Method and apparatus for sorting recycled material |
US20020175113A1 (en) * | 1998-05-22 | 2002-11-28 | Hannu Tahkanen | Method and apparatus for sorting of chips |
FI104471B (en) * | 1998-07-09 | 2000-02-15 | Sunds Defibrator Woodhandling | Process and apparatus in the screening of chips |
US6325215B1 (en) * | 1999-04-07 | 2001-12-04 | The United States Of America As Represented By The Secretary Of Agriculture | Method and apparatus for separating elastomeric particulates and fibers from a pulverized mixture |
ES2246211T3 (en) | 2000-04-18 | 2006-02-16 | Machinefabriek Bollegraaf Appingedam B.V. | CONVEYOR FOR THE TRANSPORTATION OF BULK MATERIALS. |
DE102004008642A1 (en) * | 2004-02-19 | 2005-09-08 | Hauni Primary Gmbh | Method and device for removing foreign substances from tobacco to be processed |
CA2476194C (en) | 2004-07-30 | 2010-06-22 | Suncor Energy Inc. | Sizing roller screen ore processing apparatus |
US8393561B2 (en) | 2005-11-09 | 2013-03-12 | Suncor Energy Inc. | Method and apparatus for creating a slurry |
DE102006002880A1 (en) * | 2006-01-20 | 2007-07-26 | Dieffenbacher Gmbh + Co. Kg | Method and forming station for forming a spreading material mat in the course of the production of wood-based panels |
US8307987B2 (en) * | 2006-11-03 | 2012-11-13 | Emerging Acquisitions, Llc | Electrostatic material separator |
US8618432B2 (en) | 2007-12-18 | 2013-12-31 | Emerging Acquisitions, Llc | Separation system for recyclable material |
CA2640514A1 (en) | 2008-09-18 | 2010-03-18 | Kyle Alan Bruggencate | Method and apparatus for processing an ore feed |
US8336714B2 (en) * | 2009-05-14 | 2012-12-25 | Emerging Acquistions, LLC | Heating system for material processing screen |
CA2812114C (en) * | 2009-07-24 | 2013-12-24 | Suncor Energy Inc. | Screening disk, roller, and roller screen for screening an ore feed |
US10111385B2 (en) | 2016-06-24 | 2018-10-30 | Jackrabbit | Nut harvester with separating disks |
AU2020218530A1 (en) | 2019-02-08 | 2021-08-12 | Jackrabbit, Inc. | A nut harvester with a removable assembly and a method of replacing a removable assembly of a nut harvester |
CN115740159B (en) * | 2022-12-20 | 2023-08-15 | 南皮县绿源环保设备有限公司 | Stamping device is used in automobile punching part processing |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1899292A (en) * | 1929-11-11 | 1933-02-28 | George W Rienks | Screening device |
SE406280B (en) * | 1977-10-03 | 1979-02-05 | Luossavaara Kiirunavaara Ab | TERM |
US4430210A (en) * | 1979-07-13 | 1984-02-07 | Rauma-Repola Oy | Screen |
US4376042A (en) * | 1981-05-11 | 1983-03-08 | Weyerhaeuser Company | Chip sizing process |
US4789068A (en) * | 1986-05-14 | 1988-12-06 | Gilmore Larry J | Wood chip classifying system |
US5012933A (en) * | 1988-02-12 | 1991-05-07 | Acrowood Corporation | Machine and method for sorting out over-thick wood chips |
US5058751A (en) * | 1988-02-12 | 1991-10-22 | Acrowood Corporation | Machine for sorting out over-thick wood chips |
US5000390A (en) * | 1989-05-30 | 1991-03-19 | Weyerhaeuser Company | Apparatus and method for sizing wood chips |
US5078274A (en) * | 1990-02-13 | 1992-01-07 | James River Corporation Of Virginia | Method and apparatus for wood chip sizing |
US5137621A (en) * | 1990-03-02 | 1992-08-11 | Weyerhaeuser Company | Integrated screening system for sizing wood chips |
-
1991
- 1991-12-10 FI FI915803A patent/FI90019C/en active
-
1992
- 1992-12-02 CA CA002084375A patent/CA2084375C/en not_active Expired - Fee Related
- 1992-12-03 US US07/985,263 patent/US5232097A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
FI915803A0 (en) | 1991-12-10 |
FI90019B (en) | 1993-09-15 |
FI90019C (en) | 1993-12-27 |
FI915803A (en) | 1993-06-11 |
CA2084375C (en) | 2002-07-23 |
US5232097A (en) | 1993-08-03 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKLA | Lapsed | ||
MKLA | Lapsed |
Effective date: 20101202 |